Mobile device positioning in ad hoc networks is a crucial issue due to the network properties and hardware limitations of particular devices (nodes). In this paper, a new conception of mobile device based on software defined radio architecture for mobile positioning in ad hoc networks is proposed. Sixport technology is implemented into our software defined radio receiver. Angle of arrival local...

Satellite orbit and clock corrections are always treated as known quantities in GPS positioning models. Therefore, any error in the satellite orbit and clock products will probably cause significant consequences for GPS positioning, especially for real-time applications. Currently three types of satellite products have been made available for real-time positioning, including the broadcast ephem...

In this paper, we study the sensitivity of the Box Gaussian Mixture Filter (BGMF) in hybrid positioning. The idea of BGMF is to split the state space into pieces using parallel planes when necessary and approximate the restriction of a Gaussian component in each piece as a Gaussian. In the sensitivity analysis, we change the distance between the parallel planes and examine how that affects the ...

Combining a variety of positioning technologies and making use of their respective advantages, this paper presents a strategy of seamless positioning. With this method, the positioning system can be used for both indoor and outdoor environments, and it can solve the problems which most LBS applications cannot locate in some circumstances. The paper also designs a new indoor positioning algorith...

Wireless ad-hoc sensor networks (WASN) are attracting research interest recently because of their various applications in distributed monitoring, communication, and computing. In this paper, we concentrate on the range error problem of WASN positioning algorithms. A new matrix pencil based time of arrival (TOA) positioning method (MPP) is proposed for WASN. The new scheme employs matrix pencil ...

Generic indoor personal positioning with an accuracy better than 10m error is still a challenging research issue. It is well known that the key to solving this problem is the combination of different positioning techniques. In this paper, a combined approach of pedestrian dead reckoning (PDR) and GPS positioning is followed. An acceleration sensor provides signals with which a neural network is...

The Global Positioning System (GPS) is highly reliable and accurate when used outdoors. However, in indoor environments, due to the additional signal loss incurred by the walls of the buildings, the detection and decoding of GPS signals becomes a difficult task. As a solution to the indoor area coverage problem, an indoor positioning system based on GPS repeaters and a modified positioning algo...

Aerospace engineering education improvement program sponsored by Advisor Office, Ministry of Education in Taiwan aims to improve the capability of undergraduate students to design and conduct experiments as well as to obtain hands-on experience in a variety of aerospace engineering such as flight dynamics, control, navigation, global positioning, and wireless communication. In a four-year aeros...

promotion of exclusive breastfeeding: teaching good positioning and support from fathers and families     sakkaki m [1] *, khairkhah m [2]     received: 23 aug, 2012 accepted: 21 nov, 2012     abstract   background & aims : breastfeeding has many advantages for both mothers and infants. several factors have negative effect on the duration of breastfeeding, one of them being mode of delivery. ca...